Gotta love this topic. I like one of the first posts that said there are too many variables at this point, which is true. Things like: is Simon going to progress, how much will Britt progress, how much will Hill progress and can he stay healthy, can Okung stay healthy, how will Burley/Shead/Pinkins progress etc.
If Hill stays healthy, we'll get that interior penetration that will cause QBs to throw the ball quicker than they want to. Simon is actually pretty good with the ball in the air, but he gets exposed if you leave him on a WR too long. Getting Suh (which I can't rely on) would obviously cover the DT depth issue, pass rush issue, and alleviate some CB issues.
If Okung could stay healthy, we're ok on the OL. We were the top rushing team in the league by a pretty fair margin. Lynch makes a lot of that, but to be honest, Turbin and Michael with more reps probably have us at around #3. Pass blocking is poor against teams like the Rams with elite DL's, but they make a lot of teams look bad. Can we upgrade our OL ? Sure. Easily. Is it the top priority ? WIth how they played last year (even though it drives me nuts at times) no.
I don't fall prey to the last thing I've seen. Our secondary was beat to crap in the Superbowl; we never gave up 14 points in the 4th quarter of any game last year, and I don't expect to see it this year unless we're unhealthy. Pete and John will churn the secondary depth anyways, so it's not really a top priority.
I look at the weakest part of this team. That's my top priority, and that's WR and TE. It's just ridiculous how many times they've been completely nonexistent this year, against a variety of different CBs. If we even had one mismatch our offense would be so much harder to defend. Look at that last Arizona game: Willson on Foote was a mismatch and it blew the game open. We need a quality WR and TE (I'd take one or the other) that can consistently make plays. Our offense was the worst part of our team last year, specifically those skill position groups. Also, if we get a guy that can win one on one matchups, Wilson could get rid of the ball more quickly and make up some deficiencies on the OL, kinda like Brady and P. Manning can do.
We had the #1 defense in the NFL last year. We're on a historic run of defense, really. Saying we need DT depth or CB depth or a better #2 CB is all true, but it only raises the overall quality of the defense incrementally. Upgrading with a GOOD WR or TE is disproportionate to anything we could do on defense.